These professional quality frames are made from 1.9” Sch. 40 aluminum pipe. The frames are all aluminum and feature fully welded brace mounts and fully welded axle and leg supports. The four support braces are made from galvanized steel tubing for extra durability. The wheel base is 60” wide. The front leg, which is 43” long, is capped with premium Sch. 80 PVC caps.